Licensed Heating & Air Conditioning (C-20) contractors in California

The California Contractors State License Board (CSLB) lists 8,999 California contractors classified C-20 (Heating & Air Conditioning (C-20)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of June 29, 2026.

Showing 2,281–2,340 of 8,999 contractors

1. Circle N Heating & Air Conditioning

   Redding, CA · CSLB #850355 · as of June 29, 2026
   Active · clear
2. Circotemp INC

   West Hills, CA · CSLB #783920 · as of June 29, 2026
   Active · clear
3. Circulair Heating & Air Conditioning

   Bakersfield, CA · CSLB #1030480 · as of June 29, 2026
   Active · clear
4. Lambert And Son LLC DBA Circular A C

   Wildomar, CA · CSLB #1057386 · as of June 29, 2026
   Active · clear
5. Cisco Heating & Cooling Systems

   Winnetka, CA · CSLB #983588 · as of June 29, 2026
   Active · clear
6. Cisneros Brothers Plumbing INC

   Hesperia, CA · CSLB #864345 · as of June 29, 2026
   Active · clear
7. City Air

   Glendale, CA · CSLB #979090 · as of June 29, 2026
   Active · clear
8. City Breeze

   Glendale, CA · CSLB #1090235 · as of June 29, 2026
   Active · clear
9. City Flow Heating And Air Conditioning

   Northridge, CA · CSLB #1086938 · as of June 29, 2026
   Active · clear
10. City Wide Air Conditioning

    Granada Hills, CA · CSLB #532048 · as of June 29, 2026
    Active · clear
11. Citywide Heating & Cooling LLC

    Fontana, CA · CSLB #1093551 · as of June 29, 2026
    Active · clear
12. City Wide Plumbing Heating And Air Conditioning

    Moreno Valley, CA · CSLB #781759 · as of June 29, 2026
    Active · clear
13. CJ Air Conditioning & Heating Company

    Laguna Woods, CA · CSLB #898999 · as of June 29, 2026
    Active · clear
14. C J E Heating & Air Conditioning

    Redwood City, CA · CSLB #1000743 · as of June 29, 2026
    Active · clear
15. C J Heating & Cooling

    Visalia, CA · CSLB #971721 · as of June 29, 2026
    Active · clear
16. C J'S Affordable Heating & Air Conditioning

    Imperial, CA · CSLB #993476 · as of June 29, 2026
    Active · clear
17. CJS Cooling Tower Services

    Norco, CA · CSLB #980549 · as of June 29, 2026
    Active · clear
18. C J'S Heating & Air Conditioning

    Valley Center, CA · CSLB #939344 · as of June 29, 2026
    Active · clear
19. C & K Heating & Air

    Tehachapi, CA · CSLB #1110453 · as of June 29, 2026
    Active · clear
20. Claddagh Refrigeration Company INC

    San Francisco, CA · CSLB #796321 · as of June 29, 2026
    Active · clear
21. Harry Clark Plumbing And Heating INC

    Oakland, CA · CSLB #792463 · as of June 29, 2026
    Active · clear
22. Clark Heat And Air INC

    Orangevale, CA · CSLB #1028574 · as of June 29, 2026
    Active · clear
23. J Clark Heating & Cooling

    Sonoma, CA · CSLB #1090153 · as of June 29, 2026
    Active · clear
24. Clark Plumbing Heating And Airconditioning CO

    Valencia, CA · CSLB #277453 · as of June 29, 2026
    Active · clear
25. Clark Refrigeration

    Redding, CA · CSLB #832242 · as of June 29, 2026
    Active · clear
26. Clark & Sons Aire INC

    Ventura, CA · CSLB #1074723 · as of June 29, 2026
    Active · clear
27. Classic Air Mechanical

    Orange, CA · CSLB #1069650 · as of June 29, 2026
    Active · clear
28. Classic Heating & Air Conditioning

    Redlands, CA · CSLB #643710 · as of June 29, 2026
    Active · clear
29. Classic Heating And Air Conditioning

    Concord, CA · CSLB #960065 · as of June 29, 2026
    Active · clear
30. Classic Plumbing Heating & Air

    San Diego, CA · CSLB #1143182 · as of June 29, 2026
    Active · clear
31. Clayton Brothers Heating And Air INC

    Clayton, CA · CSLB #838282 · as of June 29, 2026
    Active · clear
32. Clayton Valley Mechanical Heating And Air Conditioning

    Clayton, CA · CSLB #507324 · as of June 29, 2026
    Active · clear
33. Clean Air Company INC

    San Jose, CA · CSLB #1156196 · as of June 29, 2026
    Active · clear
34. Clean Air HVAC INC

    Concord, CA · CSLB #829011 · as of June 29, 2026
    Active · clear
35. Clean Air Mechanical

    Buellton, CA · CSLB #705114 · as of June 29, 2026
    Active · clear
36. Clean Air Solutions

    Woodland Hills, CA · CSLB #1153130 · as of June 29, 2026
    Active · clear
37. Clean Breeze Air

    Fairfield, CA · CSLB #1074492 · as of June 29, 2026
    Active · clear
38. Clear Air Heating & Cooling INC

    Salinas, CA · CSLB #1125738 · as of June 29, 2026
    Active · clear
39. Clear Choice Plumbing & Drains

    Ramona, CA · CSLB #703999 · as of June 29, 2026
    Active · clear
40. Clear Flow Heating & Air INC

    Stanton, CA · CSLB #1083874 · as of June 29, 2026
    Active · clear
41. Clear Heating And Air INC

    El Cajon, CA · CSLB #1076034 · as of June 29, 2026
    Active · clear
42. Clearly Comfort LLC

    Draper, CA · CSLB #1125859 · as of June 29, 2026
    Active · clear
43. Clear Path Air Solutions

    Woodlake, CA · CSLB #1140882 · as of June 29, 2026
    Active · clear
44. Clemco Mechanical

    Stockton, CA · CSLB #753793 · as of June 29, 2026
    Active · clear
45. Clemmer Services INC

    Barstow, CA · CSLB #652231 · as of June 29, 2026
    Active · clear
46. Clennair A/c & Heating

    Huntington Beach, CA · CSLB #509320 · as of June 29, 2026
    Active · clear
47. Clever Heating And Cooling

    San Francisco, CA · CSLB #1155494 · as of June 29, 2026
    Active · clear
48. CL Heating And Air INC

    Citrus Heights, CA · CSLB #1084345 · as of June 29, 2026
    Active · clear
49. Clifton Plumbing & Heating

    Sand City, CA · CSLB #979775 · as of June 29, 2026
    Active · clear
50. Climate Air Masters INC

    Anaheim, CA · CSLB #695854 · as of June 29, 2026
    Active · clear
51. Climate Brothers INC

    Santee, CA · CSLB #931151 · as of June 29, 2026
    Active · clear
52. Climate Care

    Glendale, CA · CSLB #914031 · as of June 29, 2026
    Active · clear
53. Climate Care INC

    Manteca, CA · CSLB #1009516 · as of June 29, 2026
    Active · clear
54. Climatech HVAC Services INC

    Oxnard, CA · CSLB #1147865 · as of June 29, 2026
    Active · clear
55. Climatech INC

    Los Angeles, CA · CSLB #1073460 · as of June 29, 2026
    Active · clear
56. The Climate CO Heating And Air

    Ukiah, CA · CSLB #1113355 · as of June 29, 2026
    Active · clear
57. Climate Concepts

    Alpena, CA · CSLB #817626 · as of June 29, 2026
    Active · clear
58. Climate Control

    Cupertino, CA · CSLB #651284 · as of June 29, 2026
    Active · clear
59. Climate Control

    Bakersfield, CA · CSLB #894659 · as of June 29, 2026
    Active · clear
60. Climate Control Heating And Air Conditioning

    Sylmar, CA · CSLB #1139790 · as of June 29, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of June 29, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.